koert kuipers created SPARK-26208:
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Summary: Empty dataframe does not roundtrip for csv with header
Key: SPARK-26208
URL: https://issues.apache.org/jira/browse/SPARK-26208
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.4.0
Environment: master branch,
commit 034ae305c33b1990b3c1a284044002874c343b4d,
date: Sun Nov 18 16:02:15 2018 +0800
Reporter: koert kuipers
when we write empty part file for csv and header=true we fail to write header.
the result cannot be read back in.
when header=true a part file with zero rows should still have header
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